The　reaction　behavior　of　C6H6　was　investigated　in　a　tubular-flow　reactor　containing　a　three-way　catalyst.　Experiments　were　performed　to　investigate　the　effects　of　coexistence　gas　components,　temperature,　gas　flow　rate　and　operating　age　of　catalytic　converter.　The　components　of　C6H6,　H2,　CO,　H2O,　HC,　O2　and　N2　were　selected　from　the　gasoline　engine　exhaust　gas.　The　experimental　results　show　that　the　oxidation　of　C6H6　was　enhanced　by　the　presence　of　O2　and　CO,　while　the　presences　of　H2,　HC　and　H2O　have　suppressive　effect　on　the　oxidation　of　C6H6　than　O2　and　CO.　The　results　reveal　that　catalyst　has　lower　catalytic　oxidation　activity　for　C6H6　oxidation　at　lower　temperature,　and　has　higher　catalytic　oxidation　activity　for　C6H6　than　CH4,　C2H6　and　C3H8,　and　decomposition　of　C6H6　via　catalyst　was　similar　to　the　decompositions　of　C2H4　and　C3H6.　The　operating　age　of　catalytic　converter　has　lower　effect　on　the　oxidation　of　C6H6　with　an　increase　in　the　operating　time　of　catalytic　converter　from　0　to　80,000km.　©　2014,　International　Journal　of　GEOMATE.